Add stream-alarms and acknowledge-alarm to the .NET CLI

stream-alarms attaches to the gateway's central alarm feed (mirrors
stream-events: --max-events cap, --json/--jsonl, --filter-prefix);
acknowledge-alarm is a unary session-less ack (--reference required,
--comment, --operator). Both wired through IMxGatewayCliClient and the
adapter.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

clients/dotnet/MxGateway.Client.Cli/MxGatewayCliClientAdapter.cs

@@ -52,6 +52,22 @@ internal sealed class MxGatewayCliClientAdapter : IMxGatewayCliClient
         return _client.StreamEventsAsync(request, cancellationToken);
     }
 
+    /// <inheritdoc />
+    public Task<AcknowledgeAlarmReply> AcknowledgeAlarmAsync(
+        AcknowledgeAlarmRequest request,
+        CancellationToken cancellationToken)
+    {
+        return _client.AcknowledgeAlarmAsync(request, cancellationToken);
+    }
+
+    /// <inheritdoc />
+    public IAsyncEnumerable<AlarmFeedMessage> StreamAlarmsAsync(
+        StreamAlarmsRequest request,
+        CancellationToken cancellationToken)
+    {
+        return _client.StreamAlarmsAsync(request, cancellationToken);
+    }
+
     /// <inheritdoc />
     public Task<TestConnectionReply> GalaxyTestConnectionAsync(
         TestConnectionRequest request,